Hille J, van Kan J, Schilperoort R
J Bacteriol. 1984 May;158(2):754-6. doi: 10.1128/jb.158.2.754-756.1984.
All Ti plasmid-encoded virulence functions that were studied act in trans. An octopine Ti plasmid-specific vir operon, called vir-O, located on an EcoRI restriction fragment has been characterized. Sequences with promoter activity in Escherichia coli were identified for a second vir operon, called vir-C, which was located close to the position of vir-O.
所有被研究的Ti质粒编码的毒力功能都具有反式作用。位于一个EcoRI限制片段上的章鱼碱Ti质粒特异性毒力操纵子,称为vir-O,已被鉴定。在靠近vir-O位置处发现了第二个毒力操纵子,称为vir-C,其在大肠杆菌中具有启动子活性的序列也已被鉴定。